Comments by "" (@doktorbimmer) on "Real Engineering" channel.

  1. +Phil Evans 'Miss Shilling's orifice' did nothing to fix the stalling problem.. it only addressed the flooding issue that could lead directly to the aircraft crashing due to loss of power.. Only the American Bendix-Stromberg PD-18 pressure-feed carb developed for the Packard V-1650 cured the flawed R-R Merlin.
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  2. When you make a video about an ENGINE FLAW you might find images of other planes that used THE SAME ENGINE the fact that you didn't realize this or that the Hurricane used the same Merlin engine with the same flawed carburetor isn't exactly a good sign that you wrote a well researched comment.
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  3. +silver fox The ME-109 still shot down more aircraft than the spit, it was the most successful fighter aircraft design in history.
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  4. +Fenrir The Unchained The Schilling device reduced the flooding problem, but did nothing to solve the fuel starvation problem.. only the American Bendix carb solved both problems
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  5. +Marty Miles Sorry Marty, the Packard V-1650 used a "float-less" or pressure-fed carburetor and was never fitted with fuel injection, Like the later Rolls-Royce Merlin 68, 69 models it used the Bendix-Stromberg PD-18 Updraft pressure feed Carburetor.
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  6. +Aaron Campbell You have never seen a demonstration using an analogy where something similar is used solely for the purpose of demonstrating the effect? The Hurricane had the exact same flaw.. because it used the same engine...
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  7. David Edbrooke The Allison powered the fastest fighter aircraft in the world at the time it was introduced.. The Packard V-1650 was vastly improved over its original R-R design and included several American improvements that were later adopted by Rolls-Royce including the Allison's superior Bendix-Stomberg PD-18 pressure-feed carburetor which cured the Merlin's fatal flaw.
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  8. +Andrew Fishburn Rolls-Royce did not develop the fuel systems on any of the Merlin engines.. Early Merlins used automotive type SU carbs or later American produced Stromberg-Bendix carbs.. The only pressure-feed system produced by Rolls-Royce was a copy of the Bendix first used on the Griffon 101 introduced in 1946. Ignorance is bliss... isn't it?
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  9. +Andrew Fishburn Now you are suggesting Rudolf Diesel didn't invent the first practical Direct Fuel Injection System. Please Just tell us who did?
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  10. +otterspocket2 Then cite an example of a Rolls-Royce or any other fighter aircraft engine equipped with fuel injection? Its a simple question, if the brits possessed this technology there should some example of it to show for it.
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  11. +silver fox R-R had a practical production quality GDI system? Please cite an example? Then explain why R-R adopted the American Bendix-Stomberg PD carburetor? A pressure-feed carb is still a long way from an actual fuel injection system.. something that Rolls -Royce never had available for the Merlin during the war. Any single engine pilot would consider a complete loss of power a "fatal flaw" although a complete loss of power is not always fatal.. its without in doubt the worse type of mechanical failure short of structural failure, Loss of power is, in any normally heavier than air vehicle, effectively a loss of flight control.
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  12. US designed and made carbs were fitted to brit made Merlins, and US made Packard V-1550 shipped to the UK.
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  13. +Chris Norman Yes, GDI effectively lowers the octane requirement, or allows high manifold pressures without the risk of detonation. It also completely eliminates the the fatal stalling/flooding problem in addition it gives the engine more power and greater range by effectively reducing pumping loss internally ( no restrictive, power robbing venturi in the intake path) and as a additional bonus effectively reduces icing, prolongs engine life and the problems the Allies had with lead fouling. Then why did the US Army Air Force also develop and introduce its own GDI system too?
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  14. +John Burns wrote, qoute; "as they developed only the FW-190 after it." LOL!!!!!!
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  15. +101jir In the context of video's subject matter, the severely flawed fuel system of Rolls-Royce Merlin's SU flaot valve carburators there should be no confusion regarding the meaning of the term "stall"
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  16. Entelin At least German pilots didn't have to worry about their engines stalling in a dive.. or carburetor icing, their engines used GDI
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  17. Kirothe Avenger Ah.. No, Rolls-Royce adopted the Packard's Bendix carburetor.. which is not fuel injection at all.. just a much better design than the R-R's antiquated SU float bowl carbs. The Luftwaffe used GDI (Gasoline Direct Injection) throughout the war while the technology was not available to the Allies until nearly the end of the war on just a few selected models, mostly American manufactured.
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  18. +Sultros Drunknsage The US did not steal the Merlin.. in fact the brits came to the US for help, due to the simple fact that Rolls-Royce did not the capacity to meet demand and did not have the experience to convert the design into one suitable for mass production. R-R continued building Merlin engine mostly by hand-built methods and techniques throughout the war. Ford Motor Company, who was the first choice by both American and british officials actually turned down by the offer and proposed its own design ( The Ford GA V-12) Packard was later offered the deal and accepted. Packard quickly assessed that the problematic SU carb was obsolete and redesigned the Merlin to use the superior Bendix pressure feed design. American made Merlins delivered to RAF featured the Bendix carb and testing revealed the superior performance, R-R later adopted the American improvements.
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  19. +Bruce Bartup The SU equipped R-R Merlin certainly was flawed.. and completely outdated. The Chandler-Groves pressure feed carburator was in production in 1937. And the Bendix-Stomberg was in production by 1938. German Aircraft manufacturers were producing engines with 3 different types of Direct Fuel Injection as early as 1935. All Carburaters have one major disadvantage compared to fuel injection... LESS POWER Carbs require the use of a venturi to produce a pressure drop... this pressure drop is the direct result of the restriction in air flow caused by the venturi.
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  20. Dude! Same engine, same shitty carbs same problems
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  21. +101jir But you can fairly compare Rolls-Royce's outdated and fatally flawed float valve carburetor to other aircraft that did not exhibit any of these problems.
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  22. +David Edbrooke The Spitfires stalling R-R Merlin engine was a serious flaw that did not effect the Packard V-1650 or the Allison V-1710... The Allison powered P-38 was a plane that at the time of its introduction not only outperformed the flawed Spitfire... but with its superior fuel delivery system offered a cure to this fatal flaw...
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  23. +otterspocket2 Its very clear from this example that overall performance was superior utilizing Direct Fuel Injection.. a technology the the brits simply didn't have yet.
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  24. +Tiger Moth That's good for a laugh!Hahaha! As I've pointed out before... you are no expert on WW2 aircraft engines... particularly fighter planes.
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  25. +Tiger Moth Then explain why there were not one but 2 technical efforts to correct the fatal defect caused by the outdated SU float valve carb???? If it wasn't an issue? Why go to such tremendous effort to correct the fatal flaw.
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  26. +Tiger Moth Yes, and I have had to correct many of your egregious and rather embarrassing mistakes.. In particular the difference between manifold "boost" and Water/Methanol Injection and the difference between 'WEP' War Emergency Power and MIL Power (P-100) aka Max. Continuous Power Rating.. Two very important fundamental concepts you were hopelessly confused about until a corrected you.
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  27. +Tiger Moth Explain why there was a concerted effort to remedy this flaw that was not shared with Luftwaffe or American aircraft???
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  28. +Andrew Fishburn Please cite an example? The video's topic is in fact the R-R Merlin's fatal flaw.. so that is the topic of discussion here.
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  29. +otterspocket2 You are referring to the temporary "fix" to correct only the flooding problem that could indeed cause the engine to stall completely.. a fatal flaw even in non-combat operations.. The American Bendix pressure-feed carb solved both issues related to the outdated SU design which suffered both loss of power AND stalling due to flooding.. Direct Fuel Injection was immune to these flaws and had several other significant advantages such as increased power output (carbs work by restricting airflow) and resistance to icing and detonation... It is why the Luftwaffe continued to use fuel injection throughout the war and was later adopted by BOTH USAAF and RAF late in the war.. of course the introduction of the jet engine halted further Allied development after the war.. propeller driven fighters were rendered obsolete by this time..
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  30. +Andrew Fishburn No, wrong answer... Cite an example of a brit fighter plane equipped with direct fuel Injection prior to the introduction of the Daimler-Benz 601, BMW 801 or Jumo 211 in the early to mid 1930's????? Direct injection was invented by Rudolf Diesel in 1892
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  31. +Andrew Fishburn Then cite an example of a brit fighter with Direct Fuel Injection prior to the RLMs adoption in 1935???
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  32. +Tiger Moth Just the facts..
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  33. +otterspocket2 We are trying to achieve a fighter aircraft design that does not stall..and does not lose power when engaging or being engaged by an enemy fighter. A problem not suffered by pilots flying American or German produced fighters at this stage of the war..
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  34. +Andrew Fishburn and what has been repeated over and over again is that the Spitfire and the Hurricane were both equipped with fatally flawed SU carb, and suffered the exact same fatal performance deficiencies..
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  35. +Tiger Moth Sorry Tiger Moth, The Bendix PD carb was an AMERICAN design. First delivered to the brits in shipment of American made aircraft with Allison V-1710 engines and later Packard V-1650 installed on britsh aircraft.
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  36. +Andrew Fishburn No you are dodging the subject.. by the way, the type of internal combustion engines used by the RAF during WW2 were invented in Germany by Nikolaus Otto and Carl Eugen Langen
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  37. +Tiger Moth The brit were still using steam engines when Germany developed the first practical internal combustion engines which were patented and sold under license around the world... including in the UK.
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  38. +Andrew Fishburn it certainly is.. if the brits had fuel injection technology at the time the Merlin wouldn't have had the fatal stalling problem which is the topic of this video...
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  39. +Andrew Fishburn Not at all... you have simply exhausted the resources of your limited knowledge on this topic
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  40. +Tiger Moth The Stromberg-Bendix PD carb was developed in 1934.. long before the Merlin 66 existed
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  41. +Tiger Moth Owing to the fact that you have absolutely no formal education regarding aircraft engine design and operation.. you are completely oblivious to the fact that engines equipped with Direct Fuel Injection ARE NOT EFFECTED by detonation caused by excessive inlet manifold temperatures... So Yes, you look like a batty old fool now.
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  42. +Andrew Fishburn Don't cry about it now, you were bested fairly and soundly.
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  43. +Tiger Moth You really are like a Tiger Moth among Spitfires! Lol!! You have just proven you have no clue what Direct Fuel Injection is.. Direct injection uses injectors mounted DIRECTLY INTO THE COMBUSTION CHAMBER No fuel is introduced into the combustion chamber until the piston reaches the top of the compression stroke and IGNITION occurs..
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  44. +Andrew Fishburn I simply called you out on an egregious and foolish claim you made... and then you completely failed to back it up.. you folded.
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  45. +otterspocket2 Rolls Royce did not have Direct Fuel Injection technology... or a pressure feed carb. in 1940.. THAT WAS THE POINT! The Stromberg-Bendix PD carb is an AMERICAN design... not british.
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  46. +Andrew Fishburn Then just cite an example of a WW2 brit fighter equipped with Direct Fuel Injection before 1935?
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  47. +Andrew Fishburn LOL!!! You want me to prove that something didn't exist?? Something I just asked to prove it did! I'm starting to think I'm dealing with a child, certainly not a mature adult.
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  48. +Tiger Moth You just said they did? But didn't even know what DFI was... Why should we believe you?
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  49. +Tiger Moth Introducing the fuel into the impeller is not fuel injection.. That is Draw-through-Supercharger Carburetion.
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  50. +otterspocket2 So you are seriously suggesting Rolls-Royce INTENTIONALLY WANTED their Merlin engines to stall and lose power in high G maneuvers???
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